Dust-arrester.



G. W. GLASSFORD, SR-

DUST ARRESTER.

APPLICATION FILED APR-21.1916.

Patented July 4, 1916.

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G.- W. GLASSFORD, Sn.

DUST ARRESTER.

APPLICATION FILED APR-21,1916.

1 1 89,807. Patented July 4, 1916.

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GEORGE w. GLASSFORD, $3., OFTCLEVELAND, OHIO.

DUST-ARRESTER.

Specification of Letters Patent.

Patented July 4., 1916.

Application filed April 21, 1916. 7 Serial No. 92,789.

To all whom it may concern:

Be it known that I, GEORGE W. GLAss- FORD, Sn, a citizen of the UnitedStates, residing at Cleveland, in the county of Cuyahoga and State ofOhio, have invented certain new and useful Improvements inDust-Arresters, ofwhich the following is a specification.

This invention relates. to dust arresters of that type having a gang ofscreens located wit in a casing, with means to jar the screens todislodge dust therefrom, and the improvements relate particularly to themanner in which the screens are constructed and in which they aresupported in the casing. a i

The invention is illustrated in the accompanying drawings in which:

Figure 1 is an end elevation of the casing, partly in section. Fig. 2 isa vertical cross section, showing one of the screens in elevation. Fig.3 is a side elevation of one of the screens, partly broken away. Fig. 4is an edge view of one of the screens. Fig. 5 is a detail thereof insection.

Referring specifically to the drawings, the dust arrester house or outercasing is indicated at 1, constructed of proper size and shape toinclose the parts hereinafter described. This has an outlet chute 16 atthe bottom. Part of the inner wall of the top consists of tongue andgroove stuff as indicated at 1 forming a roof for the chamber above thescreens, and 2 are strips of canvas or the like extending between saidroof and the upper edges or corners of the gang of screens, these stripsbeing held in place by wooden strips 3. This forms a chamber above thescreens, with flexible sides permitting the screens to vibrate, andforming a dust tightv connection which prevents dust from settling ontop of the screens.

Each screen unit comprises a frame comis provided with strips 141 with aspace therebetween to hold felt packing 15, providing a tight jointbetween the head frames, and these frames have openings as indlcated at30, which communicate across the gang, leading to an outlet 31 for theclean air.

The screen cloth 9 is supported and prevented from collapsing by wires 7stretched between the head frames and the bottom piece 10 and thesewires are spaced apart by blocks 8 to which the wires are attached bystaples 18. The screens are secured together in a gang by bolts 24extending through the head frames 12', which are set into rabbets in theupper ends of the end pieces 10.

The gang of screens rest at their lower ends on cross bars 40, above thechute 16. At one end, each screen is provided with a piece 13, to whichare fastened cross strips 25 on which are mounted bearings 26 for ashaft 27 which has cams 28 arranged to strike the bars 50 of hammers 29,these bars being pivoted at the bottom at 51. Springs 52 are connectedbetween the hammers and the ends of the screens, and act to return thehammers after they are swung out by the cams, and on the return strokethe hammers strike leather pads fastened to the cross frame 25, therebyjarring the screens.

34 is an inlet to the outer casing, and between this and the gang ofscreens is a shield 36 which extends across the casing, being held bysupports 35, and acts to protect the screens from the impact of hard orlumpy sediment or particles which enter with the dusty air.

The openings 30 at the top of the screen may be made any size desired,according to the size of the outlet pipe connected therewith, and thesize may be varied by an appropriate change in the pieces forming thehead frames '12 without aifecting the area of the screen cloth surface,these head frames being as shown at the top of each unit and extendingcompletely across the same.

In operation the dusty air entering through the inlet 34 is deflected bythe shield 36, and passing around the same is drawn through the cloth atthe sides of the screen units, the clean air flowing upwardlytherebetween to the head frames and thence through the trunk openings 30to the outlet. The screens are jarred by the hammers in an obviousmanner. Vibration of the screens is permitted by the flexible strips 2which connect the screens to the roof, and

these strips prevent dust entering above and lodging on top of theunits. The ability to use head frames having openings of differentsizes, without varying the dust collecting area or surfaces, is highlyadvantageous in the practical erection of the arrester, 1n order to suitthe same to local con ditions.

from the top downwardly, and provided with head frames secured to theside wall of the casing, said head frames extending across the screenframes from the front to the back thereof and fitting side by sideagainst each other and having registering lateral openings communicatingwith the said outlet opening. I

3. A screen for dust arresters, comprising a screened frame providedwith sides converging from one end to the opposite end, and head frameson opposite sides of the said frame at the wide end thereof, said headframes extending entirely across said wide end and having lateralopenings.

4. A screen for dust arresters, comprising a frame consisting of top andbottom pieces, and end pieces tapered downwardly, screen fabric onopposite sides of said frame, and head frames extending across the topof said frame, at opposite sides thereof, from one end piece to theother, said head frames having lateral openings.

In testimony whereof, I do aflix my signature in presence of twowitnesses.

' GEORGE W. GLASSFORD, SR. l/Vitnesses:

JOHN A. BOMMHARDT, CHARLES E. BOWMAN.

Copies of thin patent may be obtained for five cents each, by addressingthe lqqmmilsioner of Iatents. Washington, D. 0.

